Alert archive / Maine / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 97, NWS Gray, ME

August 1, 2015Somerset County, Maine

NWS Gray, ME issued this severe thunderstorm warning at Aug 1, 2015, 1:51 PM EDT for Somerset County, Maine. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 1, 2015, 1:51 PM EDT (17:51 UTC)
Expired
Aug 1, 2015, 2:20 PM EDT
In force
29 min
Issued by
NWS Gray, ME
Area
Storm-based polygon

County Somerset County, ME

The radar

The Caribou radar (KCBW), 177 km from the middle of the area, began a volume at 17:55 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Gray, ME (KGYX), launched 12:00Z, 5.9 hours before the alert went out and 182 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Gray, ME at 12:00Z on 2015-08-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 56 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Gray, ME at 12:00Z on 2015-08-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 79 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
56 J/kg
Mixed-layer CIN
-91 J/kg
Mixed-layer LCL
1752 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
79 m²/s²
0-3 km storm-relative helicity
93 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Gray, ME wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 1, 9:00 AM EDT, 4 hours 51 minutes earlier.

Area forecast discussion, Aug 1, 9:00 AM EDT, 4 hours 51 minutes before
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Hazardous weather outlook, Aug 1, 6:31 AM EDT, 7 hours 20 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE GRAY ME
631 AM EDT SAT AUG 1 2015

MEZ007>009-012>014-020>022-NHZ001>004-021045-
NORTHERN OXFORD-NORTHERN FRANKLIN-CENTRAL SOMERSET-SOUTHERN OXFORD-
SOUTHERN FRANKLIN-SOUTHERN SOMERSET-ANDROSCOGGIN-KENNEBEC-
INTERIOR WALDO-NORTHERN COOS-SOUTHERN COOS-NORTHERN GRAFTON-
NORTHERN CARROLL-
631 AM EDT SAT AUG 1 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MAINE AND NORTHERN
NEW HAMPSHIRE.

.DAY ONE...TODAY AND TONIGHT.

SCATTERED SHOWERS AND THUNDERSTORMS WILL DEVELOP THIS AFTERNOON.
A FEW OF THESE STORMS MAY CONTAIN STRONG GUSTY WINDS AND HAIL.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE MONDAY AFTERNOON AND
MONDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED.

MEZ018-019-023>028-NHZ005>015-021045-
INTERIOR YORK-INTERIOR CUMBERLAND-COASTAL YORK-COASTAL CUMBERLAND-
SAGADAHOC-LINCOLN-KNOX-COASTAL WALDO-SOUTHERN GRAFTON-
SOUTHERN CARROLL-SULLIVAN-MERRIMACK-BELKNAP-STRAFFORD-CHESHIRE NH-
EASTERN HILLSBOROUGH NH-INTERIOR ROCKINGHAM-COASTAL ROCKINGHAM-
WESTERN AND CENTRAL HILLSBOROUGH NH-
631 AM EDT SAT AUG 1 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MAINE...CENTRAL NEW
HAMPSHIRE...NORTHERN NEW HAMPSHIRE...SOUTHEASTERN NEW HAMPSHIRE AND
SOUTHERN NEW HAMPSHIRE.

.DAY ONE...TODAY AND TONIGHT.

ISOLATED TO SCATTERED THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON.
WHILE SEVERE WEATHER IS NOT EXPECTED...GUSTY WINDS WILL BE
POSSIBLE WITH ANY STORMS THAT DEVELOP.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE MONDAY AFTERNOON AND
MONDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

ANZ150>154-021045-
STONINGTON ME TO PORT CLYDE ME OUT TO 25 NM-PENOBSCOT BAY-
PORT CLYDE ME TO CAPE ELIZABETH ME OUT TO 25 NM-CASCO BAY-
CAPE ELIZABETH ME TO MERRIMACK RIVER MA OUT TO 25 NM-
631 AM EDT SAT AUG 1 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CASCO BAY...PENOBSCOT
BAY...THE COASTAL WATERS FROM CAPE ELIZABETH ME TO MERRIMACK RIVER
MA...THE COASTAL WATERS FROM PORT CLYDE ME TO CAPE ELIZABETH ME AND
THE COASTAL WATERS FROM STONINGTON ME TO PORT CLYDE ME.

.DAY ONE...TODAY AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Aug 1, 11:40 AM EDT, 2 hours 11 minutes before
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Special weather statement, Aug 1, 12:13 PM EDT, 1 hour 38 minutes before
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Special weather statement, Aug 1, 12:54 PM EDT, 57 minutes before
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Special weather statement, Aug 1, 1:16 PM EDT, 35 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
116 PM EDT SAT AUG 1 2015

MEZ012-NHZ002-004-011745-
SOUTHERN OXFORD ME-NORTHERN CARROLL NH-SOUTHERN COOS NH-
116 PM EDT SAT AUG 1 2015

THE NATIONAL WEATHER SERVICE IN GRAY MAINE HAS ISSUED A

* SPECIAL WEATHER STATEMENT FOR...
  SOUTHERN OXFORD COUNTY IN MAINE
  NORTHERN CARROLL COUNTY IN NEW HAMPSHIRE
  SOUTHERN COOS COUNTY IN NEW HAMPSHIRE

* UNTIL 145 PM EDT

* AT 115 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
  A STRONG THUNDERSTORM NEAR PINKHAM NOTCH...MOVING TO THE EAST AT 25
  MPH.

* WIND GUSTS OF 35 TO 45 MPH ARE EXPECTED WITH THIS STORM.

* LOCATIONS IMPACTED INCLUDE...
  MOUNT WASHINGTON...
  PINKHAM NOTCH...
  JACKSON...
  CHATHAM...
  AND STOWE.

LAT...LON 4416 7135 4428 7131 4437 7082 4408 7088
TIME...MOT...LOC 1715Z 266DEG 24KT 4421 7123

LEGRO
Special weather statement, Aug 1, 1:25 PM EDT, 26 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
125 PM EDT SAT AUG 1 2015

MEZ009-011815-
CENTRAL SOMERSET ME-
125 PM EDT SAT AUG 1 2015

THE NATIONAL WEATHER SERVICE IN GRAY MAINE HAS ISSUED A

* SPECIAL WEATHER STATEMENT FOR...
  CENTRAL SOMERSET COUNTY IN MAINE

* UNTIL 215 PM EDT

* AT 123 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
  STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 11 MILES SOUTHWEST
  OF ROCKWOOD TO 19 MILES WEST OF BLANCHARD TO 7 MILES EAST OF
  CARRABASSETT VALLEY...MOVING TO THE EAST AT 25 MPH.

* WIND GUSTS OF 35 TO 45 MPH ARE EXPECTED WITH THESE STORMS.

* LOCATIONS IMPACTED INCLUDE...
  MOOSEHEAD...
  THE FORKS...
  MAYFIELD...
  LAKE MOXIE...
  AND CARATUNK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF ON OR NEAR LAKE MOXIE...GET OUT OF THE WATER AND MOVE INSIDE A
STURDY SHELTER NOW. IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH
TO BE STRUCK BY LIGHTNING.

&&

LAT...LON 4565 6973 4565 6970 4563 6971 4562 6970
      4558 6971 4553 6978 4531 6970 4529 6971
      4512 6966 4509 6971 4511 7015 4513 7016
      4511 7027 4532 7014 4558 7004 4567 6974
TIME...MOT...LOC 1722Z 255DEG 24KT 4556 6992 4535 6997 4511 7008

LEGRO
Special weather statement, Aug 1, 1:40 PM EDT, 11 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
140 PM EDT SAT AUG 1 2015

MEZ012-NHZ004-011815-
SOUTHERN OXFORD ME-NORTHERN CARROLL NH-
140 PM EDT SAT AUG 1 2015

THE NATIONAL WEATHER SERVICE IN GRAY MAINE HAS ISSUED A

* SPECIAL WEATHER STATEMENT FOR...
  SOUTHERN OXFORD COUNTY IN MAINE
  NORTHERN CARROLL COUNTY IN NEW HAMPSHIRE

* UNTIL 215 PM EDT

* AT 140 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
  A STRONG THUNDERSTORM 11 MILES NORTHEAST OF NORTH CONWAY...MOVING
  TO THE EAST AT 20 MPH.

* PEA SIZE HAIL AND WIND GUSTS OF 35 TO 45 MPH ARE EXPECTED WITH THIS
  STORM. VERY HEAVY RAIN IS FALLING...AND WILL CAUSE WATER TO POND ON
  ROADWAYS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS.

* LOCATIONS IMPACTED INCLUDE...
  WATERFORD...
  GREENWOOD...
  STONEHAM...
  SWEDEN...
  AND CHATHAM.

LAT...LON 4424 7110 4424 7104 4428 7105 4438 7063
      4416 7064 4413 7070 4414 7071 4411 7075
      4418 7111
TIME...MOT...LOC 1739Z 263DEG 16KT 4420 7103

LEGRO

The office that day

Everything else NWS Gray, ME issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 1, 11:40 AM EDTSpecial Weather StatementGYXSomerset35 min
Aug 1, 12:54 PM EDTSpecial Weather StatementGYXFranklin36 min
Aug 1, 1:25 PM EDTSpecial Weather StatementGYXSomerset50 min
Aug 1, 1:40 PM EDTSpecial Weather StatementGYXOxford35 min
Aug 1, 2:07 PM EDTSpecial Weather StatementGYXOxford23 min
Aug 1, 2:29 PM EDTSpecial Weather StatementGYXAndroscoggin31 min
Aug 1, 2:54 PM EDTSpecial Weather StatementGYXAndroscoggin, Kennebec36 min
Aug 1, 3:13 PM EDTSevere Thunderstorm WarningGYXAndroscoggin, Kennebec, Lincoln, Sagadahoc, Waldo47 min
Aug 1, 3:51 PM EDTSevere Thunderstorm WarningGYXKennebec, Knox, Lincoln, Waldo54 min
Aug 1, 4:06 PM EDTSpecial Weather StatementGYXYork24 min
Aug 1, 4:10 PM EDTSpecial Marine WarningGYX65 min
Aug 1, 4:38 PM EDTSevere Thunderstorm WarningGYXKnox, Waldo26 min
Aug 1, 11:30 AM EDTSpecial Weather StatementGYXCoos30 min
Aug 1, 12:13 PM EDTSpecial Weather StatementGYXGrafton32 min
Aug 1, 1:16 PM EDTSpecial Weather StatementGYXCarroll29 min

Nearby

Severe Thunderstorm Warnings in Maine, 2015Every severe thunderstorm warning in 2015

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.